<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../../vue/vue.js"></script>
</head>

<body>
    <div id="app">
        <div v-if="seen">You found me!</div>
        <div v-if="notSeen">You can't find me!</div>
        <div v-if="seen">You found me!</div>
        <div v-if="notSeen">You can't find me!</div>
        
        <div>
            <input type="text" v-model="score">
            <div v-if="score>=90">A</div>
            <div v-else-if="score>=80">B</div>
            <div v-else-if="score>=70">C</div>
            <div v-else>D</div>
        </div>

    </div>

</body>
<script>
    new Vue({
        el: "#app",
        data() {
            return {
                seen: true,
                notSeen: false,
                score: 0,
                seenShow: true,
                notSeenShow: false
            }
        }
    })
</script>

</html>